$(".sticky_content li").mouseover(function () {
  $("#none").stop(true).animate(
    {
      height: 300,
      opacity: 1,
    },200);
  $("body").mousemove(function ( evt) {
    var e =  evt||event;
    var a = e.screenY;
    if(a>400 ){
        $("#none").stop(true).animate(
      {
        height: 0,
        opacity: 0,
      },200);
    }
    
    
  });

});
